Polarity switch for satellite television receiver
US4672687A · kind A · utility
34Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1985 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Jan 29, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/001
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved polarity switch for connection between a dual antenna system and a satellite television reception system has a first embodiment which utilizes a pin diode switch between the dual antenna system and each of a plurality of receivers to permit use of the receiver to select one of the two antenna feeds for decoding and display at that television set. A second embodiment is also disclosed which utilizes an electromechanical relay to isolate the antenna feeds from each receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.